Improvement in slates



Louis PRITCHARD, or .BR-.oon'r'..vNr-NnvvV YORK.

Letters Patent No. 93,120, dated July 27, 1869.

IMPROVEMENT IN' SLATES.

The Schedule referred to in these'Letters Patent andy makingjpart o fthe same r To all whom it may concern Be it known that I, LoUIsPInTcHARD, 'of Brooklyn, in the county of Kings, and in the State of-NewYork, have invented certain new and useful Improvements in Slates; and Ido hereby declare that the following is a full, clear, and exactdescliption thereof, reference being had to the accompanying drawings,and

to the letters of reference marked thereon, making a part of thisspecification.

The nature of my invention consists in the construction of a slate, andin th'e arrangement of certain devices hercafter set forth anddescribed.

Figure l is a perspective of my invention.

Figure 2 is a section view of the same.

Letter A represents an ordinary slate,`in which the slate extends uponly a part of the wayin-:the frame B.

In the upper part of the 'ame, there is a wide groove eut, iirwhichthere are placed two small panes of glass, C, leaving a space betweenthem wide enough to slip down a copy, lwhich the child is to imitate.

Upon the top ci' the slate, there is placed a metal plate, G, the edgesof' which are turned upwards, so as to form a bed, in which the loweredges of the panes' are to rest.

In order to'change the copies, whenever desired, l the upper cross-pieceD ot the frame has been pivoted .to the frame, so that it can be raisedupright, when a new one can be inserted between the panes, and thepiece/then be closed down.

Upon the end of this piece, there is a small rodlike projection, whichcatches in the aperture iu the at spring E, secured to the side of theframe, whereby it is securely held.

The metal plate G extends across the ame, and

the ends passing through slots in the side of the frame,

are then clinched.

In order to prevent the panes of glass from being jarred, or rattling, asmall wedge is inserted between their ends, on the inside, which presses-them tightly against the frame.

Having thus described my invention,

What I claim, land desire to secure by Letters'Patent, is

The pivoted cross-piece D, when provided with a rod-like projection uponits end, so as to catch in the fiat spring E, substantially as setforth.

In testimony that I claim the foregoing, I have hereunto set my hand,this 12th day of May, 1869. LOUIS PRITCHARD. Witnesses:

F. A. LEHMANN, j J. M. Sroors.

